【題目】 It’s important for the figures _________ regularly.

A. to be updated B. to have been updated

C. to update D. to have updated

【答案】A

【解析】

試題分析：考查不定式用法。本句中it是形式主語(yǔ)，真正的主語(yǔ)是后面的不定式短語(yǔ)。本句中的不定式是一個(gè)復(fù)合結(jié)構(gòu)，the figures與動(dòng)詞update構(gòu)成被動(dòng)關(guān)系，所以使用被動(dòng)語(yǔ)態(tài)。句意：這些數(shù)據(jù)被經(jīng)常更新很重要。故A正確。

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